42670013 has 2 divisors, whose sum is σ = 42670014. Its totient is φ = 42670012.

The previous prime is 42670007. The next prime is 42670027. The reversal of 42670013 is 31007624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24334489 + 18335524 = 4933^2 + 4282^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42670013 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42670093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21335006 + 21335007.

It is an arithmetic number, because the mean of its divisors is an integer number (21335007).

Almost surely, 2^42670013 is an apocalyptic number.

It is an amenable number.

42670013 is a deficient number, since it is larger than the sum of its proper divisors (1).

42670013 is an equidigital number, since it uses as much as digits as its factorization.

42670013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 42670013 is about 6532.2287926863. The cubic root of 42670013 is about 349.4413209414.

Adding to 42670013 its reverse (31007624), we get a palindrome (73677637).

The spelling of 42670013 in words is "forty-two million, six hundred seventy thousand, thirteen".